Current-controlling mechanism.



L. T. RHOADES. CURRENT CONTROLLING MECHANISM. APPLICATION TILED KAR.19, 1913.

1 ,O87,46 1 Patented Feb. 17, 1914.

3 SHEETS-SHEET 1.

@uncufoz eu z's T Eh aadefi L. T. RHOADBS.

CURRENT CONTROLLING MECHANISM. APPLICATION FILED MAR.19, 1913.

1,087,461 Patented Feb. 17,1914.

3 SHEETS-SHEET 2.

Qwvawboz Lea 6 T B/zuwdes L. T. RHOADES. CURRENT GONTBOLLING MECHANISM. APPLIUATION TILED MAR.19,1918. 1,087,461. Patented Feb. 17,1914.

3 SHEETS-SHEET 3.

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L earz'a Zflhaades mrrnn sTA'rps PATENT osmon.

I.E\VIS '1'. RUOA'DES, OF MONT CLARE P ENNSYLVANIA 'S'URRENT-CONTROLLING' MECHANISM.

S aecification of I tters Patent.

Patented Feb. 17,1914.

Application filed March is, 1313. Serial No. 755,404.

'combnstion engines, the object of the inven' tion being to provide an improved mechanism operated by. the time shaft which in sures a single uniform spark for every explosion, regardless of the speed. of the engine.

A further object is to provide an improved device at this character in connection .with which an ordinary induction-coil is made to deliver one single spark in the cylinder or cylinders of an internal combustion engine of the same size, disregarding the speed at which the circuit operating. device is operated.

A further object is to provide means which prevent the circuit making and breaking device from stopping with the circuit closed. a

A still further object is to prevent the circuit being madeor broken if the engine is revolved in a direction contrary toW-hich was normally intended to. operate. I

I A further object is to provide an improved arrangement of mechanical circuit making and breaking means which insures a powerful spark at the right instant, and due to the fact that the. contacts are together, an ex tremely short interval of time, thereby in an extra-ordinary manner conserving electrical energy.

A further object is to provide a device of this character which is of extremely simple construction, which is strong and durable in use, and which may be readily understood. assembled and disassembled by any one of average intelligence.

\Vith these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out n the claims.

In the accompanying drawings: Figure 1 is a plan view illustrating one form of my improvements showing the two movable members in normal position at rest. Fig. 2

is a view in side elevation of Fi 1. Fig. 3 1s a View similar to Fig. 1 showing the contact operating member in its elevated posit-ion ust prior to its descent, in hich latter movement the movable contact member is .moved into contact momentarily with the fixed contact. Fig. 4 is a view in side elevation of Fig. 3. Fig. 5 is a viewsimilar to F1 gs. 1 and 3, but showing'theposition of the contact operating member when the time shaft is turnedin the wrong direction, pre- ;venting any movement of the movable con- ;tact member. Fig. 6 is a view in longitudiinal section on the line 6-43 ofFi 1. Fig. .7- is a detail perspectiveview of t e contact ioperating member. Fig. 8 is asimilar view iof the movable contact member.

rings which are fixed to turn with the time shaft operating journal. Fig. 11 is a plan ?view similar to Fig. 1 illustrating a modifiication. Fig. 12 is a view in side elevation ;of Fig. 11. Fig. 13 is a plan view of the iconstruction shown in Figs. 11 and 12, but showing one contact operating member in iposition to engage the movable contact 'member. Fig. 14 is a view in longitudinal sectionon the line 14-44.- of Fig. 11. Fig. ;15 is a view similar to Figs. 11 and 13 but showing the contact operating member in the position to which it is moved by the oporation of the time shaft in the wrong direction. Fig. 16 is a perspective view of the contact operating member shown in Figs. 11 -to lo'inclusive. 17 is av perspective ,view of the movable contact member shown in Figs. 11 to 15, and Figs. 18 and 19 are perspective views of 'the.two rings fixed to the time shaft operating journal indicated in l i'gs. 11 to 15 inclusive.

While, of course, my improved device may be located in any position so that one part may be vertical and another horizontal, for convenience of d scription, I shall hereinafter use these terms to distinguish certain of the parts.

1 represents a base plate which we will assume to be horizontal, and which is pro- Figs. 9- {and 10 are INISPGCUVG news of the two llO recess by means of a set screw 6. The journal 3 is provided with an annular groove 7.

.in Figs. 9 and-10. The ring 10 is provided around its periphery with a circular series of cams 12, each having a beveled wall 13 and a straight wall 11. The ring 11 provided with a circular series of projections 15 corresponding in number to the number of cams 12 and having a proper relationship to said cams so as to move the movable contact member at the proper time as will be hereinafter explained.

A binding post 16 is secured upon a. plate 1 and is provided with a fixed contact 17 adapted to be engaged by a contact 18 on a movable contact member 19. This movable contact member 19 is secured at one end to a block 20 having rotary mounting on a pin 21 fixed to plate 1. A finger 22 on block 20 is connected by a coiled spring 28 on plate 1 so as to normally hold the movable contact member against a collar 60 and separate the contacts 17 and 18. The member 19 is preferably composed of sheet steel cut out form,- ing a projecting tongue 24 atits free end, said tongue having a beveled upper edge 25 for a purpose which-will hereinafter appear. Another tongue on the member 19 is bent longitudinally of the member forming a cam 26 adapted to be engaged by the projections 15 on ring 11 to force the movable contact member toward the stationary contact, but it is to be understood that this movement is not sutlicient to close thecontacts, but only sufficient to move the movable cont-act member in position to be operated'by the contact operating'member 27. A third tongue 28 formed on the member 19 at its free end is bent backwardly and acts to limit the outward movement of the flat spring 29 carrying the movable contact 18. The contactopcrating member 27 above referred to is positioned at an approximate right angle to the n'iovable contact member 19, and is pivotallv connected at one end to a block 30, and the latter having rotary mounting upon a vertical pin 31 fixed to plate 1.-

A coiled spring 32 connects a finger 33 on member 27 with plate 1 normally holding the member 27 in its lowest position which movement is limited and cushioned by a spring wire 34 which isfsecurecl to a screw 35 on block 30 and projects through an opening in theblock and through an opening 36in member 27. The member 27, at its lower edge, adjacent its'free end. is shaped to form a cam face 37 Which face is engaged by the beveled walls 13 of the cams 12 to elevate the free end of member 27.

will fail to operate the movable contact, member. It is, however, held normally-1n its lower position, and in Ha operative re lationship to the movable contact member by the spring 32 above referred to, a post- 39 limiting the inward movementof member 27 to compel it to maintain its proper position.

At the extreme free end of member 27, and at right angles thereto, an integral beveled tongue 40 is provided. This beveled tongue 40 upon the descent of member 27, engages the tongue 24 on member 19 and compels the member 19 to complete its move ment to close the contacts momentarily as i will now be explained.

As a time shaft revolves, journal 3 will cause the rings 10 and 11 to turn, and as the cams 12 are slightly in advance of the projections 15, a .cam 12 will elevate member 27. During this upward movement of member 27, the member 19 will be at rest, so that the ton ue 40 can move upwardly, out side of, and without engaging tongue 21. \Vhen the member 19 is in its elevated 'positicn, and before it begins its descent, a projection 15 will engage cam 26' and force member 19 toward the fixed contact 17, but

not. far enough to close-the circuit. \Vhen the parts are in this position, the cam 12 will ride from under the cam surface 37,

and spring 32 will draw member 27 down-.

wardly to. normal position. During this downward movement of member 27, the beveled surface of tongue 40 will engage the beveled surface of tongue 24 and compel member 19 to move far enough to momentarily bring the contacts 17 and 18 together, and then .move back to normal .position through the medium of the spring It will thus be noted that the circuit is closed during thedov'nward movement of member 27, and as this movement is always the same, regardless of the speed of the engine, the contact closing will always be uniform at every speed. Furthermore, the contacts are together but a very short time, and an economy in electric current is assured. If the time shaft is turned in a wrong direction, the cams 12 will engage the member 27 andforce it laterally as indicated in Fig. 5, so that the movable contact member-will not be operatedsufliciently to close the cir- 1.ea1,4a1

cuit, thereby preventing any sparking except when the time shaft is turning in a normal direction.

In the modification illustrated in Figs. 11 to 19 inclusive, all parts which are precisely like those of the form above described are given the same reference numerals. ()n the extension 9, rings 41 and 42 are secured which correspond to the rings 10 and 11 of the preferred form, but are somewhat differently constructed. Ring 41 has a circular series of cams 43 which impart a lateral movement to the contact operating member 44. and ring 42 has a circular series-of projections 45 which cause the movable contact member 46 to move laterally. Both of these members 44 and 46 therefore are moved laterall with relation to the journal. Member 46 is limited in its movement in one direction by a pin 61 and is provided at its free end with an opening 47 having a restricted entrance 48 extending to the extreme end of the member, and the metal which is removed to' form this opening and entrance is bent backwardly forming a tongue 49 which limits the outward movement of the contact carrying spring 29. The

contact operating member 44 comprises a bar which is mounted to slide in guides 50 on brackets 51 secured rigidly to plate 1 by screws 52. This bar 44 is held normally in the guides 50 by a coiled spring 53, and a tongue 54 secured to bracket 50 acts as a fulcrum against which one end of the member 44 engages when the device is operating normall A beveled tongue 55 is formed on mem er 44 near its free end, and this beveled tongue 55 is engaged by the came 43 to swing the member 44 away from the journal. At the extreme free end of member 44. two cams 56 are provided above and below a restricted extension 57, and these cams 56 are adapted when moved to their normal position by the spring 5.3, to engage cam surfaces 58 formed by bending the free end of member 46. In normal operation. a cam 43 engages the tongue 55 on member 44, and swings said member outwardly. At such time, a projection 45 engages a cam on member 46 and swings said member 46 toward the fixed contact 17, but not far enough to close the circuit. \Vhile the member 46 is held in this position. the cam 43 will ride past cam 55 and spring 53 will draw member 44 back to normal position. During this return movement, the cams 56 will engage the cam surfaces 58 and compel member 46 to complete its outward-movement momentarily closing the electric contacts. It is to be understood that the opening 47 is sufficiently large to accommodate the cams 56 so that member 46 may return to normal position with the cam end of member 44 projected through said opening. The entrance 48 to said opening is sufficiently large to allow the extension 57 l to swing therethrough on the outward stroke of member 44. \Vhen the time shaft is turned in a wrong direction. the straight walls of i runs 43 engage the straight wall o tongue 55 causing the member 46 to move longitudinally as indicated in Fig. 15. without in any manner affecting the closing of the electric circuit.

It will be noted that with both forms of my invention, the. movable contact mem is caused to move in a direction toward x1e fixed contact, and this movement is completed by the return movement of the contact operating member. This return movement is in the same path as the initial movement of the contact operating member. This return movement is always the same. regardless of the speed of the engine. and hence the time of contact closing is always the same. A uniform spark and a saving in current is had. Furthermore, with inu'irovements of this character, it is impossible for the device to stop with the contacts closed because. such contacts are only closed during the quick return movement of the contact operating -member. Furthermore, it will be noted that the contact operating member is moved initially and upon its return through thesamepath, which movement in the mechanisms above described is oscillatory and the return movement controlled by a spring so that it is always uniform. Furthermore, it will be noted that the turning of the time shaft in a wrong direction cannot possibly close the electric circuit, and hence there can be no explosion of the cylinders exceptv when the engine is operating correctly.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what ters Patent is:

1. A device of the character described. comprising a pivoted contact operating member having two motions. the first of which is produced by the rotation of the en gine, the second or the return motion being accomplished by a spring. both of said motions taking place in the same path or track, arranged to force contacts to touch and separate during the second or spring operated movement, substantially as described.

2.A device of the character described. comprising a contact operating member having two movements. the travel of the mem ber during both movements being in the same path, a second member carrying a con: tact point arranged to be moved into the I claim as new and desire to secure by Letpath of the first-mentioned member, to move a contact into and out of" electrical connection vvrth a second contact point, substantially as described.

3-A device of the character described,

' second member during the second or spring actuated movement of the first-mentioned member, the first movement of each member being produced by cam, substantially as de-.

scribed.

t. The combination of a base carrying a shaft adapted to be driven by the engine or other means, having two cams secured thereto, a support on the base, a contact op erating member pivotally connected at, end to the support, one of said cams having projections formed on its face to move the contact operating member against the tension of a spring, said spring returning the member to its original position regardless of the speed of its first movement, and during the spring returned movement cooperate with a second member to both close and open an electrical circuit when the shaft is revolved in one direction only,- the move ment of both members being in the same path during the normal or regular direction of the shafts rotation, and means on said cam to cause the contact operating member to be moved in a direction when the rotation of the shaft is reversed to prevent the closing of the electric circuit, substantially described.

A device of the character described, comprising a base, a shaft projecting through. the base, a fixed contact on the base. a movable contact member supported on the base and normally spaced from the fixed contact; a support on the base, a movable contact operating member pivotally connected to the support, springs holding said members in normal position, means on the shaft for imparting (v movement to the movable contact member toward the fixed contact. means for moving the contact operating member. and said members so con strip-ted that the return movement of the contact operating men'iber completes the movement of the movable contact member to momentarily move the contacts together, substantiallv as described.

6. A device ofthe character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, a movable contact member supported on the base and normally spaced from the fixed contact, a support on the base, a movable contact operating member pivotally connected to the support, springs holding said members in normal position, means on the shaft for imparting a movement to the movable contact member toward the fixed contact, means for moving the contact operating member, and cam surfaces on both of said members moved into contact upon the return movement of the contact operating member to complete the movement of the movable contact member and momentarily move the contacts together, substantially as described.

7. A device of the character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, a movable contact member supported on the base and normally spaced from the fixed contact, a movable contact operating'member supported on the base, springs holding saidmembers in normal position, a ring secured on the shaftand having a circular series of projections engaging the movable contact member to move the same toward he fixed contact, a second ring secured on' the shaft and having a circular series of cams engaging the contact-operating member to'move the same in one direction, and said'members so constructed that the return movement of the contact operating member "completes the movement of the movable contact member to momentarily move the contacts together, substantially as described.

8. A device of the character, described, comprising a base, a shaft projecting through the base, a fixed contact on the base, a movable contact member supported on the base and normally spaced from the fixed contact, a movable contact operating member supported on the base, springs holding said members in normal position, a ring secured on the shaft and having a circular series of projections engaging the movable contact member to move the same toward the fixed contact,a second ring secured on the shaft and having a circular series of cams engaging the contact operating member to move the same in one direction, and cam surfaces on both of said members moved into contact; upon the return -movement of the contact operating member to complete the movement of the movable contact member and momentarily move the contacts together, substantially as described.

9. A device of the character described, comprising a fixed contact, a movable contact member, a .contact operating member having 'a fixed pivotal mounting and held against longitudinal movement, means for moving the contact operating member in one direction, a spring returning the contact op erating member to normal position, and said members so constructed that the contact operating member will compel the, movable contact member to momentarily move the contacts together during the return movement of the contact operating member. substantially a described.

10. A device of the character described.

said contact operating member pivotallv supported and held against longitudinal movement. means for moving the contact, operating member in one direction. a spring returning the contact operating member to normal position. said members so constructed that the contact operating member will compel the movable contact member to mo- 1 mentarily move the contacts together during the return movement of the contact operat- 1 mg member, and said contact operating member movable through the same path in both initial and return movements, substantially asdescribed.

11. A device of the characterdescribed. comprising a fixed contact, a movable contact member. means for moving the movablecontact member toward the fixed contact, a contact operating member, said 0011- tact operating member pivotally supported 1 and held against longitudinal movement. 1 means for oscillating the Contact operating 3 member throughout a single path, and means on said members compelling the momentary closing of the contacts during the movement of the contact operating member on the re turn stroke of the latter, substantially as pescribed.

12. A device of the character described, comprising a fixed contact, a movable contact member, means for moving the mov able contact nember toward the fixed contact, a contact operating member, said contact operating member pivotally supported l and held against longitudinal movement,

means for oscillating the contact operating member throughout a single path, and means on sald members compelling the momentary closing of the contacts during the movement 5 of the contact operating member on the return stroke of the latter, and a spring compelling a uniform return movement of the i contact operating member, substantially as i described.

13. A device of the character described, comprising a fixed contact, a spring-held movable contact member-normally spaced from the fixed contact, a contact operating member having a fixed pivot and mechanii cally moved in one direction and elastically returned to normal position, said contact f operating member held against longitudinal 1 movement, and means on said members compelling the movable contact member to momentarily close the contacts during the spring operative movement of the contact memlier, substantially as deoperating member,

scribed.

15. A device of the character described, comprising a fixed contact. a spring-held movable contact member normally spaced from the fixed contact, an oscillating contact operating member mechanically moved 'in one direction, and elastically returned to normal position, said contact operating 3 member having a fixed pivot and swinging in the same path during both movci'nents thereof and held against loi'igitudinal movement, and mean. on said members compelling the mo able contact member to momentarily close the contacts during the spring operative movement of the contact operating member, substantially as described.

ltS. A device of the character described. comprising a fixed contact, a springdicld oscillating movable contact member nor mally spaced from the fixed contact. an cillating contact operating member mechanically moved in one direction, and elastically returned to normal position, said contact operating member having a fixed pivot and swinging in the same path during both movements thereof and held against longitudinal movement, and means on said members compelling the movable contact member to momentarily close the contacts during the t spring operative movementofthe contact operating member, substantially described.

17. A device of the character described, comprising a base, a shaft projecting ithrough the base, a fixed contact on the base, two collars secured to the shaft. one collar having a circular series of cams thereon. the other collar having a circular series of projections thereon, a movable contact member operated by the projections to move said member toward the fixed contact. a contact: operating member moved by the cams in one direction, a spring returning said contact operating member to normal position, and means on said members com pelling the movable contact mem er to moi nientarily move the contacts together during the return movement of the. contact operating member, substantially as described.

18. A device of the character described, con'iprising a base, a shaft projecting through the base, a fixed contact on the base, two collars secured to the shaft, one collar having a circular series of cams thereon. the other collar having a circular series oi projections thereon, a movable contact member operated by the projections to move said member toward the fixed contact, a contact operating member moved by the cams in one direction, a spring returning said contact operating member to normal position, means on said members compelling the movable contact member to momentarily move the contacts together, during the return move ment of the contact operating member, said means comprising cam surfaces on the two members movable through path out of con tact with each other on the initial movement of the members, and movable through a path to contact with each other on the return movement of the contact operating member, substantially as described.

11). A device of the character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, two collars secured to the shaft, one collar having a circular series of cams thereon, the other collar having a circular series of projections thereon, a movable contact member operated by the projections to move said number toward the fixed contact, a contact operating member moved by the cams in one direction, a spring returning said contact operating nember to normal position, means on said members compelling the movable contact member to momentarily move the contacts together during the return movement of the contact operating member, and said members both having oscillating support upon the base, substantially as described.

20. A device of the character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, two collars secured to the shaft, one collar having a circular series of cams thereon, the other collar having a circular series of projections thereon. a movable contact member operated by the projections to move.

said member toward the fixed contact, a contact operating member moved by the cams in one direction, a spring returning said contact operating member to normal position, means on said members compelling the movable contact member to momentarily move the contacts together, during the return movement of the contact operating, member, said means comprising cam sur-= faces on the two members movable through a path out of contact with each other on the able through a path of contact with each other on the return movement of the contact operating member, and said members both having oscillating support upon the base, substantially as described.

'21. A device of the character described comprising a base, a shaft projecting through the base, a fixed contact on the base, amovable contact member. supported on the base and normally spaced from the fixed contact, a movable contact operating member supported on the base, springs holding said members in normal position, means on the shaft for imparting a movement to the movable contact member toward the fixed contact, means for moving the contact operating member, and said members so constructed that the return movement of the contact operating member completes the movementof the movable contact member to momentarily move the contacts together, and said contact operating member moved in a path different from its normal path when the operating means is turned in a wrong direction, substantially as described.

22. A device of the character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, a movable contact member supported on the base and normally spacedfrom the fixed contact, a movable contact operating member supported on the base, springs holding said members in normal position, means on the shaft for imparting a movement to the movable contact member toward the fixed contact, means for moving the contact operating member, andcam surfaces on both of said members moved into contact upon the return movement of the contact operating member to complete the movement of the movable contactmember and momentarily move the contacts together, and said contact operating member moved in a path different from its normal path whenthe operating means is turned in a wrong direction, substantially as described.

A device of the character described, comprising a base, a shaft projecting through the base, a fixed contact on the base, a movable contact member supported on the base and normally spaced from the fixed contact, a movable contact operating member supported on the base, springs holding initial movement of the members, and movcompletes the movement of the movable 0011- normal path when tie operating means is turned 1n a wrong direction, substantially as on the base and normally spaced from the tact member to momentarilymove the contacts together, and said contact operatingi member moved in a path different from its described.

24. A device of the character described, comprising a base, a shaft projecting through the'base, a fixed contact on the base a movable contact member supported fixed contact, a movablecontact operating member supported on the base, springs holding said members in normal position. a ring secured on the shaft and having a circular series of projections engaging the movable contact member to move the same toward the fixed contact, a second ring secured on the shaft and having a circular series of cams engaging the contact operating member to move the same intone direction, and cam'surfaces on both of said members moved into contact upon the return movement of the contactoperating member to complete the movement of the movable contact member and momentarily move the contacts together, and said contact operating member moved in a path different from its normal path when the operating means is turned in a wrong direction, substantially as described. 25. A device of the character described,

con'iprising a fixed contact, a movable contact member, a contact operating member, means for moving the contact operating member in one direction, a s ring returning the acntnct operating mem or to normal position, and said members so constructed that the contact operating member will compel the movable contact member to mo mcn'tarily move the contacts together during the return movement of the contact operating member, said contact operating member moving in the same path during its initial and return strokes, and said contactv operating member moved in a path different from its normal path when the operating means is turned in a wrong direction, substantially as described.

' 26. A device of the character described, comprising a fixed contact, a movable contact member, a contact operating member, said contact operating member pivot-ally supported and held against longitudinal movement, means for moving the contact operating member in one direction, a spring returning the contact operating member-to normal position, said members so constructed that the contact operating member will compel the movable contact member to momentarily move the contacts together during the return movement of the contact operating member, and said contact operating member movable through the same path in both initial and return movements,

ber throughout a single path in both directions of movement, and means on said members compelling the momentary closing of the contacts during the movement of the contact operating member on the return stroke of the latter, and said contact operating n' embermoved in a path different from 'its normal path when the operating means is turned in a wrong direction. substantially as described.

28. A device of the character described, comprising a fixed contact, a movable contact member, means for moving the movable contact member toward the fixed contact, a contact operating member, said contact operating member pivotally supported and held against longitudinal movement, means for oscillating the contact operatim member throughout a single path in both directions of movement, and means on said members compelling the momentary closing of the contacts during the movementof the contact operating member on the return stroke of the latter, a spring compelling a uniform return movement of the contact operating member, and said contact operating member moved in a path different from its normal path when the operating means is turned in a wrong direction, substantially as described.

29. A device of the character described, comprising a fixed contact, a movable contactmember, a contact operating member, means for moving the .contaot operating member back and forth through the same path, and means for moving the movable contact member toward the fixed contact during the initial movement of the contact operating member, and said contact operating member during its return movement completing the movement of the movable contact to momentarily bring the contacts together, substantially as described.

30. A device of the character described, comprising a fixed contact, a movable contact member, a contact operating member. means for moving the contact operating member back and forth through the same path, means for moving the movable con tact member toward the fixed contactduring the initial movement of the contact operating member, and said contact operating member during its return movement completing the movement of the movable contact to momentarily bring the contacts together. and springs returning said movable contact and said contact operating the contact operating memberback and forth through the same path, and continuously revolving means for moving the movable contact member toward the fixed contact during the initial movement of the contact operating member, and said contact operating member during its return movement completing the movement of the movable contact to momentarily bring thecontacts together, substantially as described.

82'. A device of the character described, comprising a fixed contact, a movable contact member, a contact operating member,

continuously revolving means for moving "tact during the initial movement of the contact operating member, and said contact operating member during its return movement completing the movement of the movable contact to momentarily bring the contacts together, and spring returning said 30 movable contact and said contact operating member to normal position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

LEWIS T. RHOADES.

fitnesses:

AMELIA SPENGLER, MAY SPm cLER.

coulel of thin patent may be obtained for five cents each, by addressing the Commissioner of Patent: Washington, D. G. 

